Matrix-type display device capable of being repaired in pixel unit

Abstract

A matrix-type display device having a repair layout, particularly, a matrix-type display device which can be repaired in a pixel unit, is provided. Two or more of signal lines such as scanning signal lines, displaying signal lines and auxiliary signal lines and a pixel electrode are overlapped via an insulating layer, so that a defect such as the disconnection of the displaying signal lines and scanning signal lines, the short of the pixel electrode and signal line, and the loss of electrode of a switching element, can be repaired Here, the layout of the auxiliary gate line and dual gate line can be modified.

What is claimed is:  
     
         1 . A matrix-type display device in which a plurality of pixel regions are arranged in a matrix-type, comprising: 
 up and down first signal lines stretching in the horizontal direction to form up and down boundaries of said each pixel region;    left and right auxiliary signal lines connecting said up and down first signal lines to form left and right boundaries of said each pixel region;    a second signal line stretching in the vertical direction between pixel regions, crossing said up and down first signal lines while being insulated from said up and down first signal lines;    a pixel electrode formed in said each pixel region and comprised of transparent conductive material;    a switching element having a first terminal connected to said down first signal line, a second terminal connected to said pixel electrode, and a third terminal connected to said second signal line; and    a first connect means stretching from said up first signal line to a down first signal line of an adjacent upper pixel;    a second connect means stretching from said right auxiliary signal line to a left auxiliary signal line of an adjacent left pixel; and    a third connect means stretching from said down first signal line and a down first signal line of a pixel being adjacent in the horizontal direction.    
     
     
         2 . A matrix-type display device as claimed in  claim 1 , wherein said up and down first signal lines and said right and left auxiliary signal lines cross each other along the periphery of said pixel electrode via an insulation layer to form a capacitance electrode.  
     
     
         3 . A matrix-type display device as claimed in  claim 2 , wherein cutting portions which prevent said pixel electrode from being overlapped with said right and left auxiliary signal lines are formed in the up and down directions of said second connect means.  
     
     
         4 . A matrix-type display device in which a plurality of pixel regions are arranged in a matrix-type, comprising: 
 up and down first signal lines stretching in the horizortal direction to form up and down boundaries of said each pixel region;    a second signal line stretching in the vertical direction between pixel regions, crossing said up and down first signal lines while being insulated from said up and down first signal lines;    left and right auxiliary signal lines formed in parallel to said second signal line, adjacent to said second signal line, to form left and right boundaries of said each pixel region, having at least three cross points with said second signal line together with up and down first signal lines;    a pixel electrode formed in said each pixel region and comprised of transparent conductive material; and    a switching element having a first terminal connected to said up first signal line, a second terminal connected to said pixel electrode, and a third terminal connected to said second signal line.    
     
     
         5 . A matrix-type display device as claimed in  claim 4 , wherein said auxiliary signal lines are connected to said up first signal line or said down first signal line.  
     
     
         6 . A matrix-type display device as claimed in  claim 4 , wherein said up and down first signal lines and said auxiliary signal lines are used as a capacitance electrode.  
     
     
         7 . A matrix-type display device as claimed in  claim 4 , further comprising connect means which is formed by stacking said up first signal line and a down first signal line of the upper pixel while interposing an insulation layer therebetween.  
     
     
         8 . A matrix-type display device as claimed in  claim 4 , further comprising connect means which is formed by stacking said auxiliary signal lines and auxiliary signal lines of an upper pixel while interposing an insulation layer therebetween.  
     
     
         9 . A matrix-type display device as claimed in  claim 7  or  8 , wherein said connect means is made of the same material as said pixel electrode.  
     
     
         10 . A matrix-type display device as claimed in  claim 7  or  8 , wherein said connect means is made of the same material as said third terminal.  
     
     
         11 . A matrix-type display device as claimed in  claim 4 , wherein said auxiliary signal lines are made of an opaque metal layer to block the periphery of said pixel electrode from light.  
     
     
         12 . A method of repairing disconnection of a data line in a matrix-type display device in which a plurality of pixel regions are arranged in a matrix-type and which includes: 
 a first signal line stretching in the horizontal direction to form a boundary of said each pixel region, for applying a gate signal;    a second signal line stretching in the vertical direction between pixel regions, crossing said first signal line while being insulated from said first signal line, for applying a data signal;    a pixel electrode formed in said each pixel region and comprised of transparent conductive material;    a switching element having a first terminal connected to said up first signal line, a second terminal connected to said second signal line, and a third terminal connected to said pixel electrode; and    an auxiliary signal line extended from a branch of said first signal line, being adjacent to said second signal line, wherein said first signal line and said auxiliary signal line have at least two cross points or overlapping points with said second signal line, said repairing method in which said adjacent cross points or said overlapping points are shortened using a laser when said second signal line is disconnected, and said auxiliary signal line is separated from said second signal line.    
     
     
         13 . A method of repairing disconnection of a data line as claimed in  claim 12 , wherein said first signal line is comprised of two signal lines to form up and down boundaries of said each pixel region.  
     
     
         14 . A method of repairing disconnection of a data line as claimed in  claim 12  or  13 , wherein said auxiliary signal lines are partially overlapped with said pixel electrode to be used as an auxiliary capacitance electrode.  
     
     
         15 . A method of repairing disconnection of a data line in a matrix-type display device in which a plurality of pixel regions are arranged in a matrix-type and which includes: 
 up and down first signal lines stretching in the horizontal direction to form up and down boundaries of said each pixel region, for applying a gate signal;    a second signal line stretching in the vertical direction between pixel regions, crossing said up and down first signal lines while being insulated from said up and down first signal lines, for applying a data signal;    a pixel electrode formed in said each pixel region and comprised of transparent conductive material;    a switching element having a first terminal connected to said up first signal line, a second terminal connected to said second signal line, and a third terminal connected to said pixel electrode; and    an auxiliary capacitance electrode partially overlapped with said pixel electrode, wherein said auxiliary capacitance electrode has at least two cross points or overlapping points with said second signal line, said repairing method in which said adjacent cross points or said overlapping points are shortened using a laser when said second signal line is disconnected, and said auxiliary capacitance electrode is separated to form a bypass of the data line.